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Old 09-01-2013, 11:54 AM   #1
kamanya OP
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Joined: Jun 2004
Location: Southern Tip of Africa
Oddometer: 1,275
DIY tripmaster mod with set function slaved to highbeam trigger

All LC8's have only a mode and set button on the dash. However, what is not well known is that all of them have a plug behind the dash that you can plug a Tripmaster into. What this does is allow you to scroll through the modes and manipulate the kilometers on trip 2.

The reason why one would want this is when reading a roadbook. You have trip 1 and trip 2. Typically trip 1 is used for the section distances and trip 2 is the overall distance. It is seldom that trip 2 is going match with the roadbook, especially the further in you go, so the ability to scroll the distance up or down to match the roadbook is really helpful.

What is really irritating is that Trip 1 is constantly being reset after each section and the Handlebar mounted Tripmaster doesn't have a set button. So trying to reset it by reaching over to the button on the dash is dangerous and hard. It's for that reason that I have slaved the set button to the highbeam flasher.

One can buy an ICO Rally Counter (they have remote handlebar mounted mode, set and scroll buttons and are expensive) and then on-top of that the sensors have to be mounted. Having 2 ICO's in a serious rally is a must for redundancy, but for what I want for the local rally scene, this is perfect and cost me less than $5.00

Sadly, though it's a plug and play, there are two major issues with a KTM Tripmaster; They are expensive and there is no “set” function that resets the trips.

This mod is how to wire up the Highbeam trigger to work the set function as well as make your own tripmaster that looks quite trick. The three buttons on the switchgear are “mode” “scroll up” & “scroll down

To get the buttons working and looking like this;



follow this;

http://advrider.com/forums/showthread.php?t=731728

I then dug up this from a while ago and tried out option 2, but the pictures have been deleted so I contacted the guy referenced at the bottom of the post, he dug up a few and sent them.

http://www.advrider.com/forums/showthread.php?t=83126

Right now that you’ve got the buttons squared away, how to wire the trigger in (take note of KTMax’s warnings about soldering and working on printed circuits!)….

First take the display out and carefully take it apart. This bit is stuck on, so carefully take it off



This has to come apart, it’s fairly intuitive, it’s held together with screws.

Then solder a 6cm jumper onto this side of the "Set" button



Before you solder check how you are going to route the jumper so that the plastic frame will not snag or crush it once it gets buttoned up.

Now solder it to the 17th or 18th pin on the back of the board opposite of were the plug is. If you blob onto both, it’s not a hassle. Clearly, I'm new to pc board soldering.



Right button it back up, do not mount it in it’s case yet. Just leave it like this



You need to check once the rest is done that it all works.

Find this plug behind the dash



Carefully push the tabs in and pull out the green/black wire, it’s the centre of the centre here;



The other wire to the trigger is the white one, leave this plugged in. This is the negative wire. The green/black is the positive, but since you are going to be unplugging it from the power and wiring it to 18th pin, when you pull the trigger, it completes the ground circuit.

The really awkward thing that will make this a bit of a challenge is that you need to find one of these to fit into the 18 hole. Aparently TYCO make them, I have an old harness that I harvested a few from.



I then ran one of them from the plug15cm down the sheath out a hole I had made in the sheath and then joined it to the previously mentioned wire. You can just see the wire coming out of the sheath on the left.





Now plug it all together and if you have it right, this now trips the set button



Apart from the one connector for the 20 pin plug and 3 buttons, it's a cheap mod.
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I often wonder where that road goes? And that, has usually made all the difference. Appologies to Mr Frost

kamanya screwed with this post 09-02-2013 at 01:04 AM
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